/* 孤岛艺术家专辑页面样式 - 顶级重构版 */
:root {
    --deep-burgundy: #1a091d;
    --rich-wine: #8c2f4d;
    --velvet-purple: #6a1f3a;
    --antique-gold: #c9a96e;
    --pale-gold: #e8d5a6;
    --charcoal: #0a0a14;
    --off-white: #f5f3ff;
    --silver-mist: #a0a0c0;
    --shadow-deep: rgba(0, 0, 0, 0.8);
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans JP', 'Noto Serif JP', sans-serif;
    background: 
        radial-gradient(ellipse at 20% 20%, var(--velvet-purple) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, var(--rich-wine) 0%, transparent 50%),
        var(--charcoal);
    color: var(--off-white);
    line-height: 1.6;
    overflow-x: hidden;
}

.kotou-container {
    min-height: 100vh;
    position: relative;
}

/* 返回按钮 - 东方意境 */
.back-button {
    position: fixed;
    top: 30px;
    left: 40px;
    background: transparent;
    color: var(--pale-gold);
    border: none;
    padding: 20px 36px;
    border-radius: 0;
    font-size: 1.3rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: 1000;
    letter-spacing: 2px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    overflow: hidden;
}

/* 左右引号边框 - 初始状态隐藏 */
.back-button::before,
.back-button::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent, 
        var(--antique-gold), 
        transparent);
    opacity: 0;
    transition: all 0.5s ease;
}

.back-button::before {
    left: 0;
    transform: translateY(-50%);
}

.back-button::after {
    right: 0;
    transform: translateY(-50%);
}

/* 悬停时左右边框展开 */
.back-button:hover::before,
.back-button:hover::after {
    width: 20px;
    opacity: 1;
}

/* 添加上下边框的延迟展开 */
.back-button:hover::before {
    animation: bracketExpand 0.8s ease-out forwards;
}

.back-button:hover::after {
    animation: bracketExpand 0.8s ease-out 0.1s forwards;
}

@keyframes bracketExpand {
    0% {
        width: 0;
        opacity: 0;
    }
    50% {
        width: 25px;
        opacity: 0.7;
    }
    100% {
        width: 20px;
        opacity: 1;
    }
}

/* 箭头图标 */
.back-button::before {
    content: '「';
    position: absolute;
    left: -10px;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0;
    transition: all 0.4s ease;
    font-size: 1.2rem;
    font-family: 'Noto Serif JP', serif;
    width: auto;
    height: auto;
    background: none;
}

.back-button::after {
    content: '」';
    position: absolute;
    right: -10px;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0;
    transition: all 0.4s ease;
    font-size: 1.2rem;
    font-family: 'Noto Serif JP', serif;
    width: auto;
    height: auto;
    background: none;
}

.back-button:hover {
    padding: 14px 40px;
    color: var(--antique-gold);
    letter-spacing: 2px;
    text-shadow: 0 0 10px rgba(201, 169, 110, 0.3);
}

.back-button:hover::before {
    opacity: 1;
    left: 5px;
}

.back-button:hover::after {
    opacity: 1;
    right: 5px;
}

/* 点击效果 */
.back-button:active {
    transform: scale(0.98);
    transition: all 0.2s ease;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .back-button {
        top: 20px;
        left: 20px;
        padding: 10px 18px;
        font-size: 0.9rem;
    }
    
    .back-button:hover {
        padding: 10px 32px;
    }
    
    .back-button:hover::before {
        left: 3px;
    }
    
    .back-button:hover::after {
        right: 3px;
    }
}

/* 专辑元数据区域 - 精致平衡 */
.album-metadata {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 80px;
    padding: 140px 60px 100px;
    align-items: start;
    max-width: 1400px;
    margin: 0 auto;
}

.metadata-visual {
    position: relative;
    height: 320px; /* 流媒体1:1比例 */
}

.album-cover-art {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 
        0 30px 60px var(--shadow-deep),
        0 0 0 1px rgba(201, 169, 110, 0.4);
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    filter: saturate(1.1);
}

.cover-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 115%;
    height: 115%;
    background: linear-gradient(45deg, var(--rich-wine), var(--antique-gold));
    filter: blur(50px);
    opacity: 0;
    transition: opacity 0.6s ease;
    z-index: -1;
}

.metadata-visual:hover .album-cover-art {
    transform: scale(1.02) rotate(0.5deg);
    box-shadow: 
        0 40px 80px rgba(140, 47, 77, 0.6),
        0 0 0 2px rgba(232, 213, 166, 0.6);
}

.metadata-visual:hover .cover-glow {
    opacity: 0.4;
}

.metadata-content {
    padding-top: 20px;
}

.album-title-main {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--off-white);
    line-height: 1.1;
    margin-bottom: 25px;
    background: linear-gradient(135deg, var(--off-white) 0%, var(--pale-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.album-subtitles {
    display: flex;
    gap: 12px;
    margin-bottom: 35px;
    flex-wrap: wrap;
}

.subtitle-jp, .subtitle-cn, .subtitle-en {
    background: rgba(140, 47, 77, 0.15);
    color: var(--pale-gold);
    padding: 6px 16px;
    border-radius: 18px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid rgba(201, 169, 110, 0.2);
    backdrop-filter: blur(10px);
}

.metadata-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
    margin: 25px 0 35px;
    max-width: 400px;
}

.meta-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid rgba(201, 169, 110, 0.15);
    transition: all 0.3s ease;
}

.meta-item:hover {
    border-bottom-color: var(--antique-gold);
}

.meta-label {
    color: var(--silver-mist);
    font-size: 0.8rem;
    font-weight: 400;
    letter-spacing: 0.5px;
}

.meta-value {
    color: var(--off-white);
    font-weight: 500;
    font-size: 0.85rem;
}

.album-description {
    line-height: 1.7;
    color: rgba(245, 243, 255, 0.9);
    font-size: 0.95rem;
    max-width: 500px;
}

.album-description p {
    margin-bottom: 18px;
    text-align: justify;
}

/* 核心理念区域 - 重新布局 */
.core-philosophy {
    padding: 120px 60px;
    background: linear-gradient(180deg, 
        transparent 0%, 
        rgba(26, 9, 29, 0.3) 20%,
        rgba(26, 9, 29, 0.6) 100%);
    border-top: 1px solid rgba(201, 169, 110, 0.1);
    border-bottom: 1px solid rgba(201, 169, 110, 0.1);
}

.philosophy-content {
    max-width: 1400px;
    margin: 0 auto;
}

.ego-concept {
    margin-bottom: 80px;
}

.ego-title {
    font-size: 5rem;
    font-weight: 800;
    color: var(--off-white);
    margin-bottom: 40px;
    text-align: left;
    background: linear-gradient(135deg, var(--off-white) 0%, var(--antique-gold) 50%, var(--rich-wine) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -1px;
}

.philosophy-pillars {
    display: flex;
    gap: 20px;
    margin-bottom: 60px;
}

.pillar {
    cursor: pointer;
    transition: all 0.5s ease;
}

.pillar-text {
    font-size: 1.1rem;
    font-weight: 600;
    padding: 12px 24px;
    background: rgba(140, 47, 77, 0.1);
    border-radius: 25px;
    transition: all 0.4s ease;
    color: var(--pale-gold);
    border: 1px solid rgba(201, 169, 110, 0.3);
    backdrop-filter: blur(10px);
}

.pillar:hover .pillar-text {
    background: rgba(140, 47, 77, 0.2);
    transform: translateY(-2px);
    border-color: var(--antique-gold);
}

.philosophy-quotes {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
    margin-top: 40px;
}

.heidegger-quote, .artist-quote {
    background: transparent;
    padding: 40px 30px;
    border: none;
    font-size: 1.5rem;
    line-height: 1.8;
    color: var(--off-white);
    position: relative;
    text-align: left;
    font-family: 'Noto Serif JP', serif;
    font-weight: 400;
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border-radius: 0;
    animation: quoteFloat 8s ease-in-out infinite;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(5px);
}

.heidegger-quote {
    animation-delay: 0s;
}

.artist-quote {
    animation-delay: 2s;
}

/* 明朝风格装饰 */
.heidegger-quote::before, .artist-quote::before {
    content: '「';
    position: absolute;
    top: 10px;
    left: 0;
    font-size: 4rem;
    color: rgba(201, 169, 110, 0.6);
    font-family: 'Noto Serif JP', serif;
    line-height: 1;
    font-weight: 300;
    opacity: 0.8;
    transition: all 0.4s ease;
}

.heidegger-quote::after, .artist-quote::after {
    content: '」';
    position: absolute;
    bottom: -10px;
    right: 0;
    font-size: 4rem;
    color: rgba(201, 169, 110, 0.6);
    font-family: 'Noto Serif JP', serif;
    line-height: 1;
    font-weight: 300;
    opacity: 0.8;
    transition: all 0.4s ease;
}

/* 引用来源样式 */
.heidegger-quote cite, .artist-quote cite {
    display: block;
    margin-top: 25px;
    font-size: 1rem;
    color: var(--pale-gold);
    font-style: normal;
    font-weight: 500;
    font-family: 'Noto Sans JP', sans-serif;
    letter-spacing: 0.5px;
    position: relative;
    padding-left: 20px;
}

.heidegger-quote cite::before, .artist-quote cite::before {
    content: '—';
    position: absolute;
    left: 0;
    color: rgba(201, 169, 110, 0.7);
}

/* 悬浮动画 */
@keyframes quoteFloat {
    0%, 100% { 
        transform: translateY(0px) rotate(0deg); 
    }
    25% { 
        transform: translateY(-8px) rotate(0.2deg); 
    }
    50% { 
        transform: translateY(4px) rotate(-0.1deg); 
    }
    75% { 
        transform: translateY(-4px) rotate(0.1deg); 
    }
}

/* 悬停效果 */
.heidegger-quote:hover, .artist-quote:hover {
    transform: scale(1.05) translateY(-5px);
    text-shadow: 0 4px 20px rgba(201, 169, 110, 0.4);
}

.heidegger-quote:hover::before, 
.artist-quote:hover::before,
.heidegger-quote:hover::after, 
.artist-quote:hover::after {
    color: rgba(232, 213, 166, 0.9);
    opacity: 1;
    transform: scale(1.1);
}

.heidegger-quote:hover cite, 
.artist-quote:hover cite {
    color: var(--antique-gold);
    transform: translateX(5px);
}

/* 添加微妙的背景纹理效果 */
.heidegger-quote::after, .artist-quote::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(45deg, transparent 0%, rgba(201, 169, 110, 0.03) 100%),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" opacity="0.02"><path d="M20,20 Q50,10 80,20 T80,80 Q50,90 20,80 T20,20Z" fill="none" stroke="%23c9a96e" stroke-width="0.5"/></svg>');
    border-radius: 2px;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.heidegger-quote:hover::after, 
.artist-quote:hover::after {
    opacity: 1;
}

/* 响应式调整 */
@media (max-width: 968px) {
    .philosophy-quotes {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .heidegger-quote, .artist-quote {
        font-size: 1.3rem;
        padding: 30px 25px;
    }
    
    .heidegger-quote::before, .artist-quote::before,
    .heidegger-quote::after, .artist-quote::after {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .heidegger-quote, .artist-quote {
        font-size: 1.2rem;
        padding: 25px 20px;
    }
    
    .heidegger-quote::before, .artist-quote::before {
        top: 5px;
        left: -5px;
    }
    
    .heidegger-quote::after, .artist-quote::after {
        bottom: -15px;
        right: -5px;
    }
}

/* 置顶曲目区域 - 优化布局 */
.featured-tracks {
    padding: 100px 60px;
}

.tracks-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 25px;
    max-width: 1400px;
    margin: 0 auto;
}

.track-card {
    background: rgba(20, 15, 25, 0.7);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid rgba(201, 169, 110, 0.15);
    transition: all 0.4s ease;
    cursor: pointer;
    backdrop-filter: blur(15px);
}

.track-card:hover {
    transform: translateY(-8px);
    border-color: rgba(201, 169, 110, 0.4);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    background: rgba(20, 15, 25, 0.9);
}

.track-visual {
    position: relative;
    margin-bottom: 15px;
    border-radius: 8px;
    overflow: hidden;
}

.track-cover {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    transition: all 0.4s ease;
}

.track-card:hover .track-cover {
    transform: scale(1.1);
}

.track-overlay {
    position: absolute;
    top: 8px;
    left: 8px;
    background: rgba(10, 10, 20, 0.9);
    color: var(--off-white);
    padding: 4px 10px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.8rem;
    border: 1px solid rgba(201, 169, 110, 0.3);
}

.track-info {
    text-align: center;
}

.track-name {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--off-white);
    line-height: 1.3;
}

.track-artist {
    color: var(--silver-mist);
    font-size: 0.8rem;
    font-weight: 400;
}

/* 艺术家赠言 - 明朝风格 */
.artist-dedication {
    padding: 100px 60px;
    text-align: center;
    background: linear-gradient(180deg, 
        transparent 0%, 
        rgba(26, 9, 29, 0.2) 50%,
        transparent 100%);
    position: relative;
    overflow: hidden;
}

.artist-dedication::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 2px;
    background: linear-gradient(90deg, 
        transparent, 
        var(--antique-gold), 
        transparent
    );
}

.artist-dedication::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 2px;
    background: linear-gradient(90deg, 
        transparent, 
        var(--antique-gold), 
        transparent
    );
}

.dedication-text {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.4rem;
    line-height: 1.8;
    color: var(--off-white);
    padding: 60px 0;
    position: relative;
    font-family: 'Noto Serif JP', serif;
    font-weight: 400;
    letter-spacing: 0.5px;
    animation: gentleFloat 8s ease-in-out infinite;
    transition: transform 0.6s ease, text-shadow 0.6s ease;
    cursor: default;
}

.dedication-text:hover {
    transform: scale(1.02);
    text-shadow: 0 4px 20px rgba(201, 169, 110, 0.3);
}

.dedication-text::before {
    content: '「';
    position: absolute;
    top: 20px;
    left: -40px;
    font-size: 4rem;
    color: rgba(201, 169, 110, 0.4);
    font-family: 'Noto Serif JP', serif;
    line-height: 1;
    animation: gentleFloat 10s ease-in-out infinite;
    animation-delay: 0.5s;
}

.dedication-text::after {
    content: '」';
    position: absolute;
    bottom: 20px;
    right: -40px;
    font-size: 4rem;
    color: rgba(201, 169, 110, 0.4);
    font-family: 'Noto Serif JP', serif;
    line-height: 1;
    animation: gentleFloat 12s ease-in-out infinite;
    animation-delay: 1s;
}

.dedication-quote {
    margin-bottom: 30px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    animation: gentleFloat 9s ease-in-out infinite;
    animation-delay: 0.3s;
}

.dedication-signature {
    font-size: 1.1rem;
    color: var(--pale-gold);
    font-weight: 500;
    letter-spacing: 1px;
    position: relative;
    padding-top: 20px;
    animation: gentleFloat 7s ease-in-out infinite;
    animation-delay: 0.7s;
    transition: transform 0.6s ease, color 0.6s ease;
}

.dedication-signature:hover {
    transform: scale(1.05);
    color: var(--antique-gold);
}

.dedication-signature::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent, 
        var(--antique-gold), 
        transparent
    );
    animation: gentleFloat 11s ease-in-out infinite;
    animation-delay: 1.2s;
}

@keyframes gentleFloat {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    33% {
        transform: translateY(-3px) rotate(0.2deg);
    }
    66% {
        transform: translateY(2px) rotate(-0.1deg);
    }
}

.artist-dedication::before,
.artist-dedication::after {
    animation: gentleFloat 15s ease-in-out infinite;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .artist-dedication {
        padding: 60px 20px;
    }
    
    .dedication-text {
        font-size: 1.2rem;
        padding: 40px 0;
        animation-duration: 10s;
    }
    
    .dedication-text::before,
    .dedication-text::after {
        font-size: 3rem;
        animation-duration: 12s;
    }
    
    @keyframes gentleFloat {
        0%, 100% {
            transform: translateY(0px) rotate(0deg);
        }
        33% {
            transform: translateY(-2px) rotate(0.1deg);
        }
        66% {
            transform: translateY(1px) rotate(-0.05deg);
        }
    }
}

/* ====== 专辑画廊 ====== */
.sliding-covers {
    padding: 120px 0;
    position: relative;
    overflow: hidden;
    background: 
        linear-gradient(to bottom, transparent 0%, rgba(26, 8, 21, 0.2) 50%, transparent 100%);
}

.sliding-covers::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent, 
        var(--accent-gold), 
        var(--primary-purple), 
        var(--accent-gold), 
        transparent);
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.5);
}

.slide-track {
    display: flex;
    gap: 35px;
    margin-bottom: 50px;
    animation-duration: 90s; /* 速度设置 */
    animation-timing-function: linear;
    animation-iteration-count: infinite;
    width: max-content;
    position: relative;
}

.slide-track::before {
    content: '';
    position: absolute;
    top: 0;
    left: 100%;
    height: 100%;
    width: 100%;
    background: inherit;
    display: flex;
    gap: inherit;
}

/* 伪元素复制所有子元素 */
.slide-track::before {
    content: '';
    display: flex;
    gap: inherit;
}

.slide-left {
    animation-name: seamlessSlideLeft;
}

.slide-right {
    animation-name: seamlessSlideRight;
}

.slide-item {
    flex: 0 0 220px;
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 
        0 15px 35px rgba(0, 0, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
    position: relative;
    cursor: pointer;
}

.slide-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(139, 95, 191, 0.2), 
        transparent 30%, 
        transparent 70%, 
        rgba(212, 175, 55, 0.1));
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 1;
}

.slide-item:hover {
    transform: 
        scale(1.12) 
        rotate(2deg)
        translateZ(10px);
    box-shadow: 
        0 25px 50px rgba(139, 95, 191, 0.5),
        0 0 0 2px rgba(212, 175, 55, 0.5);
    z-index: 20;
}

.slide-item:hover::before {
    opacity: 1;
}

.slide-item img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    transition: all 0.5s ease;
    filter: brightness(0.95) saturate(1.1);
}

.slide-item:hover img {
    transform: scale(1.15);
    filter: brightness(1.1) saturate(1.2);
}

@keyframes seamlessSlideLeft {
    0% { 
        transform: translateX(0); 
    }
    100% { 
        transform: translateX(calc(-220px * 4 - 35px * 3));
    }
}

@keyframes seamlessSlideRight {
    0% { 
        transform: translateX(calc(-220px * 4 - 35px * 3)); 
    }
    100% { 
        transform: translateX(0); 
    }
}

/* 曲目收录区域 */
.track-listing {
    padding: 100px 60px;
    background: rgba(10, 8, 15, 0.8);
}

.listing-header {
    text-align: center;
    margin-bottom: 60px;
}

.listing-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 40px;
    color: var(--off-white);
    background: linear-gradient(135deg, var(--off-white) 0%, var(--antique-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.filter-btn {
    background: rgba(140, 47, 77, 0.15);
    border: 1px solid rgba(201, 169, 110, 0.3);
    color: var(--pale-gold);
    padding: 10px 20px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    font-weight: 500;
    backdrop-filter: blur(10px);
}

.filter-btn:hover, .filter-btn.active {
    background: var(--rich-wine);
    transform: translateY(-2px);
    border-color: var(--antique-gold);
}

.tracks-container {
    display: grid;
    gap: 8px;
    max-width: 900px;
    margin: 0 auto;
    padding: 30px;
    background: rgba(20, 15, 25, 0.6);
    border-radius: 15px;
    border: 1px solid rgba(201, 169, 110, 0.2);
    backdrop-filter: blur(15px);
}

.track-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 12px 20px;
    background: rgba(140, 47, 77, 0.08);
    border-radius: 10px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid transparent;
}

.track-item:hover {
    background: rgba(140, 47, 77, 0.15);
    transform: translateX(5px);
    border-color: rgba(201, 169, 110, 0.2);
}

.track-order {
    font-weight: 700;
    color: var(--antique-gold);
    font-size: 1rem;
    min-width: 35px;
}

.track-name-full {
    flex: 1;
    font-size: 1rem;
    color: var(--off-white);
    font-weight: 500;
}

/* 发行进度区域  */
.release-progress {
    padding: 100px 60px;
    text-align: center;
}

.progress-content {
    max-width: 2100px;
    margin: 0 auto;
}

.latest-release {
    margin-bottom: 80px;
}

.release-card {
    background: transparent;
    border-radius: 0;
    padding: 0;
    border: none;
    max-width: 800px;
    margin: 0 auto 50px;
}

.release-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
    padding: 30px 0;
    border-bottom: 2px solid rgba(201, 169, 110, 0.3);
}

.release-title {
    font-size: 2.2rem;
    font-weight: 700;
    text-align: left;
    flex: 1;
    color: var(--off-white);
    background: linear-gradient(135deg, var(--off-white) 0%, var(--pale-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.release-date {
    color: var(--off-white);
    font-weight: 600;
    background: var(--rich-wine);
    padding: 12px 25px;
    border-radius: 25px;
    font-size: 1.1rem;
    border: 2px solid var(--antique-gold);
    white-space: nowrap;
}

.spotify-cards {
    display: flex;
    justify-content: center;
    gap: 80px;
    flex-wrap: wrap;
    margin-top: 60px;
}

.spotify-card {
    width: 720px;
    border-radius: 20px;
    transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    cursor: pointer;
    box-shadow: 
        0 30px 80px rgba(0, 0, 0, 0.6),
        0 0 0 1px rgba(201, 169, 110, 0.3);
    filter: saturate(1.05);
    position: relative;
    overflow: hidden;
}

.spotify-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(201, 169, 110, 0.1), 
        transparent
    );
    transition: left 0.8s ease;
}

.spotify-card:hover::before {
    left: 100%;
}

.spotify-card:hover {
    transform: scale(1.08) translateY(-10px);
    box-shadow: 
        0 50px 120px rgba(140, 47, 77, 0.5),
        0 0 0 2px rgba(232, 213, 166, 0.6);
    filter: saturate(1.2);
}

/* 确保在移动端也能优雅显示 */
@media (max-width: 1400px) {
    .spotify-card {
        width: 700px;
    }
}

@media (max-width: 1200px) {
    .spotify-card {
        width: 600px;
    }
    .spotify-cards {
        gap: 60px;
    }
}

@media (max-width: 968px) {
    .spotify-card {
        width: 500px;
    }
    .spotify-cards {
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .spotify-card {
        width: 100%;
        max-width: 400px;
    }
    .spotify-cards {
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .spotify-card {
        width: 100%;
        max-width: 350px;
    }
}

/* 专业底部 */
.kotou-footer {
    padding: 60px 0 40px;
    background: rgba(5, 5, 10, 0.95);
    border-top: 1px solid rgba(201, 169, 110, 0.3);
    margin-top: 100px;
}

.footer-content {
    text-align: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 60px;
}

.copyright {
    color: var(--silver-mist);
    font-size: 0.85rem;
    font-weight: 400;
    letter-spacing: 0.5px;
}

/* 鼠标圆点样式 */
#cursor-dot {
  position: fixed;
  top: 0;
  left: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(178, 120, 203, 0.5); /* 默认半透明木槿紫 */
  pointer-events: none; /* 不阻止鼠标事件 */
  transform: translate(-50%, -50%);
  transition: width 0.15s ease, height 0.15s ease, background 0.25s ease, transform 0.25s ease;
  z-index: 2147483647; /* 绝对顶层，防止视频覆盖 */
}

/* 点击旋转变方形 */
#cursor-dot.active {
  border-radius: 0%;
  transform: translate(-50%, -50%) rotate(45deg) scale(1.5);
}


/* 响应式设计 */
@media (max-width: 1200px) {
    .tracks-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 968px) {
    .album-metadata {
        grid-template-columns: 1fr;
        gap: 50px;
        padding: 120px 40px 80px;
    }
    
    .metadata-visual {
        height: 300px;
        max-width: 300px;
        margin: 0 auto;
    }
    
    .philosophy-quotes {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .tracks-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .album-metadata,
    .core-philosophy,
    .featured-tracks,
    .artist-dedication,
    .track-listing,
    .release-progress {
        padding-left: 30px;
        padding-right: 30px;
    }
    
    .album-title-main {
        font-size: 2.2rem;
    }
    
    .ego-title {
        font-size: 3.5rem;
    }
    
    .tracks-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .release-info {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .release-title {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .tracks-grid {
        grid-template-columns: 1fr;
    }
    
    .spotify-card {
        width: 100%;
        max-width: 300px;
    }
    
    .back-button {
        top: 20px;
        left: 20px;
        padding: 12px 20px;
    }
}